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One job town : work, belonging, and betrayal in Northern Ontario
\"There's a pervasive sense of betrayal in areas scarred by mine, mill and factory closures. Steven High's One Job Town delves into the long history of deindustrialization in the paper-making town of Sturgeon Falls, Ontario, located on Canada's resource periphery. Much like hundreds of other towns and cities across North America and Europe, Sturgeon Falls has lost their primary source of industry, resulting in the displacement of workers and their families. One Job Town takes us into the making of a culture of industrialism and the significance of industrial work for mill-working families. One Job Town approaches deindustrialization as a long term, economic, political, and cultural process, which did not begin and simply end with the closure of the local mill in 2002. High examines the work-life histories of fifty paper mill workers and managers, as well as city officials, to gain an in-depth understanding of the impact of the formation and dissolution of a culture of industrialism. Oral history and memory are at the heart of One Job Town, challenging us to rethink the relationship between the past and the present in what was formerly known as the industrialized world.\"-- Provided by publisher.
Book
The Old and the New on Viral Diseases in Sturgeon
Although sturgeon production by aquaculture has increased worldwide, a major factor limiting its expansion are infectious diseases, although few data about viral diseases are available however. This review provides a rapid overview of viral agents detected and described to date. Following a general introduction on viral diseases are four sections arranged by virus classification: sturgeon nucleocytoplasmic large DNA viruses, herpesviruses, white sturgeon adenovirus 1, and other viruses. Molecular diagnosis is currently the best tool to detect viral diseases, since cell culture isolation is not yet applicable for the detection of most sturgeon viruses.
Journal Article
KAVIÁR V CENTRE NETRADIČNEJ SPOLUPRÁCE
Predávame kozmetiku s výťažkom z takzvaného „sturgeon friendly\" kaviáru nielen v Českej republike, ale distribuujemeju i do ďalších krajín, vrátane Cíny,\" povedal Jiří Mrkvička, riaditeľ spoločnosti Ceskykaviar.cz s. r. o. DÔLEŽITOSŤ TRANSFERU TECHNOLÓGIÍ Takáto spoluprácaje podľa neho v našich končinách stále skôr výnimka. „Vo svete je ale tento model spolupráce, kedy súkromný subjekt obchodne uchopí výsledok výskumu a vývoja, ktorého tvorcom je univerzita, úplne bežný a obojstranne výhodný. Je taktiež členom organizácií AUTM, ASTP Proton, AIP, L.E.S.I. (predsedníctvo), ITTN, Európsky región Dunaj - Vltava_ vysokoškolská platforma, Transfera.cz (predsedníctvo - vedúca KTT je miestopresedkyňa pre medzinárodné vzťahy v rámci tejto platformy). Kancelárii transferu technológií sa podarilo od doby svojho vzniku zohnať nemalé finančné prostriedky nielen pre svoje pôsobenie, fungovanie a rozvoj, ale i pre vedeckých pracovníkov a približne v prepočte 1,3 milióna EUR na overenie aktivít proof of concept.
Journal Article
Black Soldier Fly Full-Fat Larvae Meal as an Alternative to Fish Meal and Fish Oil in Siberian Sturgeon Nutrition: The Effects on Physical Properties of the Feed, Animal Growth Performance, and Feed Acceptance and Utilization
This study provides data on the use of black soldier fly (Hermetia illucens) full-fat meal (BSFL) in Siberian sturgeon (Acipenser baerii) nutrition, examining pellet physical properties, growth performance, feed acceptance and utilization, apparent protein, and fat digestibility. The study consisted of: feed quality assessment; a growth performance; feed acceptance; digestibility trials. The effect of the use of BSFL as a replacement for fish meal (FM) and fish oil (FO) was investigated. The applied BSFL shares were 5%, 10%, 15%, 20%, 25%, and 30% of the diet, replacing up to 61.3% of FM and allowing us to reduce FO use by up to 95.4% in the case of 30% incorporation. The applied substitution affected feed quality, increasing the expansion rate, and decreasing feed density, sinking speed and water stability. However, body weight gain, specific growth rate, feed, and protein conversion ratios, were improved in groups fed BSFL. Moreover, feed acceptance was increased with treatments containing 10 to 30% BSFL. No effects on nutrients digestibility were observed. The results show that the use of BSFL as an FM and FO replacement may have positive effects on sturgeon growth performance, and BSFL can be developed as a promising alternative feed material.
Journal Article
Novel Antioxidant Collagen Peptides of Siberian Sturgeon (Acipenserbaerii) Cartilages: The Preparation, Characterization, and Cytoprotection of H2O2-Damaged Human Umbilical Vein Endothelial Cells (HUVECs)
For making full use of aquatic by-products to produce high value-added products, Siberian sturgeon (Acipenser baerii) cartilages were degreased, mineralized, and separately hydrolyzed by five kinds of proteases. The collagen hydrolysate (SCH) generated by Alcalase showed the strongest 2,2-diphenyl-1-picrylhydrazyl radical (DPPH·) and hydroxide radical (HO·) scavenging activity. Subsequently, thirteen antioxidant peptides (SCP1-SCP3) were isolated from SCH, and they were identified as GPTGED, GEPGEQ, GPEGPAG, VPPQD, GLEDHA, GDRGAEG, PRGFRGPV, GEYGFE, GFIGFNG, PSVSLT, IELFPGLP, LRGEAGL, and RGEPGL with molecular weights of 574.55, 615.60, 583.60, 554.60, 640.64, 660.64, 885.04, 700.70, 710.79, 602.67, 942.12, 714.82, and 627.70 Da, respectively. GEYGFE, PSVSLT, and IELFPGLP showed the highest scavenging activity on DPPH· (EC50: 1.27, 1.05, and 1.38 mg/mL, respectively) and HO· (EC50: 1.16, 0.97, and 1.63 mg/mL, respectively), inhibiting capability of lipid peroxidation, and protective functions on H2O2-damaged plasmid DNA. More importantly, GEYGFE, PSVSLT, and IELFPGLP displayed significant cytoprotection on HUVECs against H2O2 injury by regulating the endogenous antioxidant enzymes of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) to decrease the contents of reactive oxygen species (ROS) and malondialdehyde (MDA). Therefore, the research provided better technical assistance for a higher-value utilization of Siberian sturgeon cartilages and the thirteen isolated peptides—especially GEYGFE, PSVSLT, and IELFPGLP—which may serve as antioxidant additives for generating health-prone products to treat chronic diseases caused by oxidative stress.
Journal Article
Validation of a molecular sex marker in three sturgeons from eastern North America
Despite the importance of sex-specific information for sturgeon conservation and management, sex identification has been a major challenge outside of mature adults on spawning grounds. Recent work identified a sex-specific locus (
AllWSex2
) that appears to be broadly conserved across many Acipenserids, but the assay was not validated for all species within the family. We tested the
AllWSex2
marker in three sturgeon taxa (shortnose sturgeon
Acipenser brevirostrum
, Gulf sturgeon
A. oxyrhinchus desotoi
, and Atlantic sturgeon
A. oxyrhinchus oxyrhinchus
) from the Atlantic and Gulf of Mexico Coasts of North America to validate its use for sex identification. Our results indicate
AllWSex2
is conserved in all three taxa, presenting a new opportunity to derive sex-specific information from tissue samples, which are routinely collected from these taxa. We found high concordance (range: 97–100%) between genotypic and phenotypic/histological methods, suggesting the assay is broadly effective. However, the small amount of discordance between the methods (< 3%) suggests further refinement may be possible.
Journal Article
Yersinia ruckeri Infection and Enteric Redmouth Disease among Endangered Chinese Sturgeons, China, 2022
During October 2022, enteric redmouth disease (ERM) affected Chinese sturgeons at a farm in Hubei, China, causing mass mortality. Affected fish exhibited characteristic red mouth and intestinal inflammation. Investigation led to isolation of a prominent bacterial strain, zhx1, from the internal organs and intestines of affected fish. Artificial infection experiments confirmed the role of zhx1 as the pathogen responsible for the deaths. The primary pathologic manifestations consisted of degeneration, necrosis, and inflammatory reactions, resulting in multiple organ dysfunction and death. Whole-genome sequencing of the bacteria identified zhx1 as Yersinia ruckeri, which possesses 135 drug-resistance genes and 443 virulence factor-related genes. Drug-susceptibility testing of zhx1 demonstrated high sensitivity to chloramphenicol and florfenicol but varying degrees of resistance to 18 other antimicrobial drugs. Identifying the pathogenic bacteria associated with ERM in Chinese sturgeons establishes a theoretical foundation for the effective prevention and control of this disease.
Journal Article